München 2019 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 5: Structure and Dynamics of Nuclei I
HK 5.7: Vortrag
Montag, 18. März 2019, 15:45–16:00, HS 14
Fission cross section measurements of 235U and 242Pu — •Hans Hoffmann1,2, Toni Kögler1,2, Roland Beyer1, Arnd R. Junghans1, and Ralf Nolte3 — 1Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany — 2Technische Universität Dresden, 01062 Dresden, Germany — 3Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany
At Physikalisch-Technische Bundesanstalt the neutron-induced fission cross sections of 235U and 242Pu have been measured using parallel plate fission ionization chambers with novel, large area actinide deposits made in the Institute of Nuclear Chemistry, Mainz (A. Vascon et al., Appl. Radiat. Isotopes 95 (2015) 36). The fission cross section of 242Pu has been measured at 15 MeV using quasimonoenergetic neutrons from the DT reaction, which is above the threshold for second chance fission. These data extend the measurement done at HZDR’s neutron time of flight facility nELBE to higher neutron energy (T. Kögler et al., Phys. Rev. C (2019) in press)). A status report of the experiment and data analysis will be given. This work has been supported by the German Federal Ministry of Education and Research (PTKA-WTE 02NUK13A).